Thanks Jonathan,

I will give a try.

:)


On Tue, Feb 18, 2014 at 2:55 PM, Jonathan Greenberg <jgrn@illinois.edu>wrote:

> Eddie:
>
> This is the Windows x64 version of R 3.0.2, right?  I found that the
> x64 release for whatever reason R needs to be launched with the
> --max-mem-size=XXXM flag if you want more than 2gb available to R.
>
> XXX is the number of megabytes to give it access to.  This seemed to
> have been a change from 3.0.1 (which seemed to set the memory to be
> the max available on the system).  Give this a shot when you launch
> it.  Check
> http://stackoverflow.com/questions/1395229/increasing-the-memory-available-to-r-processes
> for some hints on this (you can append the setting to your GUI
> shortcut).
>
> You should also follow Robert's suggestion and set the chunkSize to be
> VERY small if the max-mem-size doesn't work.
>
> --j
>
>
>
> On Tue, Feb 18, 2014 at 7:08 AM, Eddie Smith <eddieatr@gmail.com> wrote:
> > Thank you very much Robert.
> >
> > Tried to increase to set the chunksize as suggested(
> > rasterOptions(chunksize=1e+05))  but still no luck.
> >
> > The full session is:
> >
> >> sessionInfo()
> > R version 3.0.2 (2013-09-25)
> > Platform: x86_64-w64-mingw32/x64 (64-bit)
> > locale:
> > [1] LC_COLLATE=English_United Kingdom.1252
> > [2] LC_CTYPE=English_United Kingdom.1252
> > [3] LC_MONETARY=English_United Kingdom.1252
> > [4] LC_NUMERIC=C
> > [5] LC_TIME=English_United Kingdom.1252
> > attached base packages:
> > [1] stats     graphics  grDevices utils     datasets  methods   base
> > other attached packages:
> > [1] rgdal_0.8-16  raster_2.2-12 sp_1.0-14
> > loaded via a namespace (and not attached):
> > [1] grid_3.0.2      lattice_0.20-24
> > My rasterstack is huge but I haven't got any problem with this
> rasterstack
> > before.
> >
> >> flag7
> > class       : RasterStack
> > dimensions  : 1032, 1656, 1708992, 10592  (nrow, ncol, ncell, nlayers)
> >
> > Thanks.
> >
> >
> >
> > On Tue, Feb 18, 2014 at 2:59 AM, Robert J. Hijmans <r.hijmans@gmail.com
> >wrote:
> >
> >> Eddie,
> >> The function does not work (maxsst is not defined). You are not
> >> providing sessionInfo()
> >> You should be able to avoid memory problems (if that is what causes
> >> this) via rasterOptions(chunksize=___)
> >>
> >> E.g.,
> >>
> >> rasterOptions(chunksize=1e+05)
> >>
> >> Robert
> >>
> >>
> >> On Mon, Feb 17, 2014 at 11:19 AM, Eddie Smith <eddieatr@gmail.com>
> wrote:
> >> > Hi guys,
> >> >
> >> > Everytime I tried to run calc(), R crashed. Any advice?
> >> > Here is my code:
> >> >
> >> > #clear memory/remove all R objects
> >> > rm(list=ls())
> >> >
> >> > #check memory size and set memory limit
> >> > memory.size()
> >> > memory.limit(10000)
> >> >
> >> > #Load related packages library
> >> > library(raster)
> >> > library(rgdal)
> >> >
> >> > #Load all raster data in a folder
> >> > img <- list.files(pattern='\\.img$')
> >> >
> >> > #Check rasters
> >> > list(img)
> >> >
> >> > #Stack layers into one file
> >> > flag7 <- stack(img)
> >> >
> >> > #2 CReate fun
> >> > time <- 1:nlayers(flag7)
> >> > fun <- function(x) {
> >> > if (all(is.na(x))) {
> >> > return(cbind(NA,NA,NA))
> >> > }
> >> > xcost<-cos(2*pi*time/366)
> >> > xsine<-sin(2*pi*time/366)
> >> > m = lm(x~xcost+xsine)
> >> > s  <- summary(m)
> >> > maxval <- max(predict(m))
> >> > r2 <- s$r.squared
> >> > sigma <- s$sigma
> >> > cbind(maxsst, r2, sigma)
> >> > }
> >> >
> >> > #3 Run function with rasterstack
> >> > r <- calc(flag7, fun)
> >> >
> >> >         [[alternative HTML version deleted]]
> >> >
> >> > _______________________________________________
> >> > R-sig-Geo mailing list
> >> > R-sig-Geo@r-project.org
> >> > https://stat.ethz.ch/mailman/listinfo/r-sig-geo
> >>
> >
> >         [[alternative HTML version deleted]]
> >
> > _______________________________________________
> > R-sig-Geo mailing list
> > R-sig-Geo@r-project.org
> > https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>
>
>
> --
> Jonathan A. Greenberg, PhD
> Assistant Professor
> Global Environmental Analysis and Remote Sensing (GEARS) Laboratory
> Department of Geography and Geographic Information Science
> University of Illinois at Urbana-Champaign
> 259 Computing Applications Building, MC-150
> 605 East Springfield Avenue
> Champaign, IL  61820-6371
> Phone: 217-300-1924
> http://www.geog.illinois.edu/~jgrn/
> AIM: jgrn307, MSN: jgrn307@hotmail.com, Gchat: jgrn307, Skype: jgrn3007
>

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